Theodore nicholas coressy koressios



T. N. KORESSIOS. THROTTLE CONTROLLING APPARATUS FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED NOV. 26. 191.7.

Patented SHEET 1.

Sept. ENS-,--

any/716%! T. N. CKKG'RE-SS-IOSi THROTTLE C'ONTROLUNG APPARATUS FOR INTERNAL COMBUSTION ENGINES.-

APPLICAHON FILED NOV-26,19l7.

1,316,727, A PatentedSept.23,1919.

2 SHEETS-SHEET 2 ressios,

THEODORE NICHOLAS CORESSY KORESSIOS, OF LONDON, ENGLAND.

THROTTLE-CON TROLLIN G APPARATUS FOR IN TERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Sept. 23, 1919.

Application filed November 26, 1917. Serial No. 204,017.

To all whom it may concern:

Be it known that I, THEODORE NICHOLAS CoRnssY KORESSIOS, a subject of His Majesty the King of England, and resident of Old Broad street, in the city of London, Kingdom of England, have invented certain new and useful Improvements in Ihrottle-Controlling Apparatus for Internal-Combustion Engines, of which the following is a speci fica-tion.

With most commercial automobiles, and to a large degree in private cars, the control of the carbureter throttle is performed by a pedal called the accelerator or carburetor throttle pedal.

When drivers work many hours a dav the foot with which they operate this pedal 3 becomes tired and consequently they generally have a tendency to rest said foot too much on the said pedal, so that by this action the pedal is pressed down more than is necessary and as a consequence a much higher consumption of fuel than that which is required is used. Y

My invention consists in so arranging and constructing the accelerator pedal that a selected speed of the car is maintained steady and uniform over the whole distance of similar conditions of running, and the foot can be allowed to rest on the pedal, when the re quired degreeof speed is obtained, without further opening the throttle.

The invention will now be described with reference to the accompanying drawings, in which: 1

Figure 1 is a plan of an accelerator pedal embodying the invention;

Fig. 2 is a partly sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a detail sectional elevation on the line38 of Fig. 1;

Fig. 4.-'is a detail sectional elevation on the line 4-4 of Fig. 1; 7

Figs. 5 and 6 are front and side elevations, respectively, of the operating lever;

Fig. 7 is a partly sectional side elevation of the pedal return spring, and the pointer and scale; y

Fig. 8 is a detail front elevation of the scale;

Figs. 9 and 10 show two general arrangements of the apparatus; and

Fig. 11 is a detail sectional elevation showing a slight modification.

' In the construction shown a small pressure plate 12 is fitted atthe side of an acceland is carried by erator pedal 13 and connected by a spindle 1 1 with a small cam block 15, which spindle can oscillate in brackets 16 on said pedal. The cam block is adapted to engage with teeth 17 formed on a rack 18 which is sccured on a support 19 by screw bolts 20, and said support is provided with a slot 21 through which the bolts pass to allow the toothed rack 18 to slide a certain degree on the support and the device to be adjusted in the correct position in accordance with the degree of opening of the carbureter throttle. Thus the plate 12 and cam block 15 can rock with the spindlelt on the brackets 16 against the action of a spiral spring 22, the limit of which rocking movement is when the point indicated at 23 on the block 12 comes against thepoint 24 of the pedal 13, (Fig. 4:).

The pedal 13 is fixed on one end of a shaft 25 by a pin 26, which shaft is mounted to oscillate in brackets 27. On the other end of the shaft 25 a lever 28 provided with a slot 29 is fixed, and said lever is pinned on the shaft at whatever position is required in order that it be opposite to and on the same vertical plane as the operating arm 30 of the carburetor throttle, see Fig. 9 which figure shows two arrangements of the lever and arm. A bifurcated member 31 is pivoted on a pin 32 which passes through the slot 29 a block 33' slidable on the lever 28 and adapted to be secured in ad.- justed position thereon by means of a set screw 34. The member 31 is connected with the throttle operating arm 30 of the carbu rotor 35 by the medium of a rod 36. The angular movements of the pedal 13 and of the carbureter throttle are rendered equal to one another by adjusting the, block 33 to the correct position on the lever 28.

The movement of the pedal can either be vertical, up-and-down, or horizontal, backward and forward, according to the make of the car andthe position of the seat of the driver. In the second case the disposition of the pedal is indicated in Fig. 10.

The pedal 13 is normally held up by a spring 37 acting on a rod 38 connected to the pedal by means of a cross pin 38, and the general disposition of these parts is indicated in Fig. 7 the tension of said spring on the pedal being regulated by a nut 39.

The bent top end 40 of the rod 38 is engaged in a slot 41 in a pointer 42 which moves over a graduated scale 43 corresponding with the entire movement of the pedal and consequently with the entire movement of the oarbureter throttle from completely shut to fully open. The scale 43 is divided into degrees from O to 4, the points 0 and 4 representing the two extreme positions of the carbureter throttle, and the position of the pointer 42 indicates the degree of opening of the carbureter throttle in relation to a given speed of the car.

A regulating screw bolt 44 and a lock nut 45 are provided whereby the normal position of the pedal 13 and consequently, the closing of the carbureter throttle can be adjusted and limited, in order to allow a slow running of the motor when the foot is ofi the pedal. ll hus the more the bolt 44 is screwed down against the pedal the more will the throttle remain open when the pedal is in normal position. A rack 46, Fig. 11, hearing one tooth 17 only, may be provided to replace the toothed rack 18 in cases in which it is desired to fix the normal speed of the car to one pre-determined degree.

The working of the apparatus is as follows:

Generally the pedal 13 is fixed on the dashboard 47 at the right side of the car at a level as low as possible and near to the floor. "When the carbureter throttle is closed, or nearly so according to the position of the bolt 44, the pedal 18 is held up by the spring 37 and the pointer 42 indicates 0 or a small degree of throttle opening. \Vhen it is required to open the carbureter throttle for normal running first the right edge of the foot is pressed on the pressure plate 12 so that it and the cam block 15 are moved from their normal positions indicated in full lines in Fig. 4 to the positions shown in dotted lines in said figure. In this manner the cam block is moved and held out of the line of the teeth 17 and the pedal can be operated up and down and can work freely as in the case of an ordinary pedal. When it is desired to open the carbureter throttle to a selected speed, and maintain said speed, the pedal and pressure plate are depressed until the car is running at the selected speed indicated on thescale 43, which latter has been regulated previously by means of a speedometer, whereupon the foot is moved slightly to the "left to release the said plate 12. The c aim block 15, under the action of the spring 22, immediately enters the particular tooth 17 that it happens to he opposite, so that when the said pedal is fixed against foot movement the foot can he rested on the pedal without opening the throttle farther. When the foot is removed from the pedal the latter is pulled up by the spring 37, the cam block, in the meantime, riding over the teeth 17 When the device is fitted with the single tooth 17 only, first the rack 46 is mounted loose on the support 19. Then the pedal and cam block 12 are depressed until the required speed is obtained and the position of the pointer 42 on the scale 43 is noted. At this position of the pedal the rack 46 is moved up and secured fast to the support, so that the cam block 15 will hold the pedal at said position and enable the foot to be rested as before.

lVhat I claim is:-

1. Throttle controlling apparatus for internal combustion engines, comprising a pedal operatively connected to the throttle, a stationary toothed member adjacent to said pedal, means carried by the said pedal and adapted to engage said toothed member at various positions of the said pedal for the purpose of fixing said pedal against foot movement, and means for releasing said fixing means.

:2. Throttle controlling apparatus for internal combustion engines, comprising a pedal operatively connected to the throttle to open and close the same, a pressure plate disposed at the side of the pedal and adapted to be actuated by the foot of an operator placed upon the pedal, and means actuated by the pressure plate to retain the pedal. against foot movement, said pressure plate constituting means for releasing said actuatmg means.

3. Throttle controlling apparatus for internal combustion engines, comprising a pedal operatively connected to the throttle to open and close the same, a pressure plate disposed adj accnt to the pedal and adapted to be actuated by the 'foot of an operator placed upon the pedal, and ratchet mechanism in connection with the pressure plate for the purpose of fixing said pedal againstfoot movement at various positions, said pressure plate constituting means for releasing said fixing means.

4. Throttle controlling apparatus for internal combustion eiigines, comprising a pedal operatively connected to the throttle to open and close the same, means for retaining said pedal in various actuated positions, means for releasing said retaining means, a dial and a pointer, and means op- I 'eratively connecting the pointer with the pedal, whereby the degrees of opening of the throttle are indicated.

5. Throttle controlling apparatus for in ternal combustion engines, comprising a pedal operatively connected to the throttle to open and close the same, means for retaining said pedal against foot movement in various actuated positions, means for re leasing said retaining means, and adjustable means independent of said retaining and releasing means applied to the pedal for adjusting and fixing the closing movement of the pedal and the consequent closing of the throttle.

6. Throttle controlling apparatus for internal combustion engines, comprising a pedal operatively connected to the throttle, a stationary toothed rack mounted adjacent to said pedal, a cam block carried by the pedal and adapted to engage said rack at various positions of the pedal and means for releasing said cam block from/the rack.

'7. Throttle controlling apparatus for internal combustion engines, comprising a pedal operativelyconnected to the throttle, a stationary toothed rack supported adjacent to said pedal, a cam block carried by the pedal and adapted to engage said rack at various positions of the pedal, means for adjusting the rack on its support, and means for releasing the cam block from the rack.

8. Throttle controlling apparatus for internal combustion engines, comprising a pedal operatively connected to the throttle, a stationary toothed rack mounted adjacent to said pedal, a cam block carried by the pedal and adapted to engage said rack at various posltions of the pedal, a spring for said cam block, and av pressure plate carried by the pedal and operatively connected to to said cam block whereby the latter can be released from the rack. v

9. Throttle controlling apparatus for internal combustion engines, comprising a pedal operatively connected to the throttle,

means for fixing said pedal against foot movement in various actuated positions,

means for releasing said fixing means, a'

pedal mounted on an oscillatory shaft, an

operating lever mounted on said shaft, an operating arm of the throttle, means adjustably connecting said lever to said arm, means for fixing said pedal against foot movement in various actuated positions, and means for releasing said fixing means.

11. Throttle controlling apparatus for internal combustion engines, comprising a pedal mounted on an oscillatory shaft, an operating lever mounted on said shaft, a block slidable and adjustable on said lever, an operating arm on the throttle, means connecting said block to said arm, means for fixing said pedal against foot movement in various actuated positions, and means for releasing said fixing means.

In testimony whereof I have hereunto signed my name.

TH. N. o. KORESSIOS. 

